Trash burner



March 20, 1956 sMlTH 2,738,743

TRASH BURNER Filed March 21, 1952 Fm. 5 Fm. 4

FIG. 9

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EARL F. MITH BY 6 Ar o RNEY TRASH BURNER Earl F. Smith, Muncie, Ind.,assignor to Midwest Metal Products Company, Muncie, Ind., a corporationof Indiana Application March 21, 1952, Serial No. 277,795

. 2 Claims. (Cl. 110-18) This invention relates to improvements inportable incinerators. It has especial reference to a device for theburning of discarded and useless materials as trash and rubbish.

To provide a burner device which will afford improved combustion is theobject, broadly stated, of my invention. Other and specific aims aredevoted to providing features of structural improvement whereby thedevice is economical of manufacture, capable of being practicablyhandled in merchandising and in use, and which is durable anddependable.

The objects of my invention are accomplished by, and the invention iscontained in, the new construction, combination and arrangement of partsdescribed in the following specification and illustrated in theaccompanying drawings, suitable characters of reference being applied tothe several parts of the invention and they appear in the differentviews.

In the drawings:

Fig. 1 is an elevational view of my new trash burner.

Fig. 2 is an elevational view, in the direction of arrow in Fig. 1.

Fig. 3 is a top plan view in the direction of arrow 3 in Fig. 2.

Fig. 4 is sectional top plan view on broken line 44 in the direction ofarrow 4 in Fig. 2.

Fig. 5 is a sectional top plan view on broken line 55 in the directionof arrow 5 in Fig. 2.

Fig. 6 is a sectional top plan view on broken line 6-6 in the directionof arrow 6 in Fig. 2.

Fig. 7 is an enlarged vertical central sectional view on the broken line77, in the direction of arrow 7 in Fig. 1.

Fig. 8 is a plan view taken on the broken line 8-8 in the direction ofarrow 8 in Fig. 7.

Fig. 9 is an elevational view indicating the appearance of the device aswhen not in use, the dome being in inverted position and nested in theupper portion of the tube.

A length of sheet metal rectangular in plan and of predetermineddimensions, curled to cylindrical form, its meeting ends being abuttedand united as by welding, constitutes upright tube 12 which forms thebody of the burner which, in the present typical instance, is abouteighteen inches in diameter. Said tube is stiffened at its upper portionby an internal annular band 14, and at its lower portion, by theinternal annular band 15. At a plane slightly above the plane of saidlower band 15 is a series of inlets 16 arranged in horizontal alignment.At a plane above the plane of said holes, is secured a support member,as ledge ring 18.

Grating which I designate as a ridged grate comprises a base ring 20 ofdiameter to be reposed, with clearance at the tube walls, upon saidledge ring 18. Wires 22 spaced and in parallelism and inclined upwardlyhave their base ends integrated with said ring 20. Their upper ends areintegrated, as by welding, at a right angle to a ridge wire 24, asindicated in Fig. 7. Cross wires 26 2,738,743 Patented Mar. 20, 1956 arein spaced parallelism with said ridge wire and at their points ofcrossing with the inclined wires 22 are secured thereto, as indicated inFig. 5. The mesh so formed permits of the subsidence readilytherethrough and without tendency to clogging, of such incombustibleresidue as may be present in the trash content of the tube. The saidgrate reposes upon the ledge ring 18, free in its position, and capableof being removed.

Transport manually of the tube is facilitated by means of a handle 30.

A length of sheet metal of predetermined length,

curvilinear in plan, curled to annular formation, its

meeting ends being abutted and welded, and the upper edges thereof beingspanned by a circular plate 34 with perforations 36, constitutes afrusto-conical cover 32 the lower base 34 thereof being of diameterlarger than the diameter of said tube 12.

To the internal face of said cover, at a plane suitably above the planeof the said lower base is secured annular base ring 38.

A bafile and deflector member 40, made of a foraminous plate ellipticalin formation (as indicated in Fig. 8) is secured within said coverinclined at an oblique angle to the vertical axis of said cover.Expanded metal is the material preferred for this baffle and deflectorplate for the reason that the openings therein are diamond shaped, theirlong dimensions being parallel to the main axis of said plate. Saidangle of inclination is, preferably, about thirty degrees. Transport ofthe cover is facilitated by providing a handle 42.

A burner, according to my invention, while economical of construction,is strong and durable and it is not liable to deformation in any of thetransactions that are incident to its use.

For facility in shipping and storage transactions, the

cover is disposed in inverted position and within an end portion of thetube, as indicated in Fig. 9. The device is of minimum weight and bulk,and its three parts namely, the tube, the cover, and the grate arecapable of being easily transported separately and of being readilyarranged in, or disassembled from the combined status as same appear inthe drawings.

In the use of the invention, the grate having been disposed upon theledge ring 18, and the trash having been disposed within the tube andupon said grate, the cover is now disposed in place, its seat ring 38resting upon the rim of the tube. The base border 34 of the coverprovides shelter at the rim portion of the tube against weatherelements. Upon firing the trash, the draught of air through the inlets16, grate 22-26 and the battle and deflector plate 40 affords eifectivecombustion. Practice of the invention has demonstrated that the portionof the trash mass that is only partially immediately consumed orcombusted, upon colliding with the bafile member 40 is caused to bedesiccated, deflected and consumed further before its rise to the peakportion and perforated top of the cover. In this prevention of the riseto the peak portion of the cover, of impermeable portions of the trash,combustion is not impeded, a dependable burning of the trash is had,smoking is minimized, subjection of portions of the tube to abnormalheating is avoided, and tendency to puffing is eliminated.

It will be understood that modifications may be made, within the scopeof the invention as it is defined in the claims, without departing fromthe principle of the invention and without sacrificing any of itsadvantages.

What I claim as my invention is:

1. In a trash burner, in combination with an upright tube having aseries of holes in the lower marginal portion of its walls, an internalannular ledge member secured to said walls at a plane above the plane of.said

holes, and a grate removably seated upon said ledge member, afrusto-conical cover the diameter thereof at its lower base beinggreater than the tube and the top of the cover being perforated, aninternal annular seat member secured to said base and being of diametersubstantially same as the said tube, and a foraminous plate securedinteriorly of said cover and inclined upwardly from a point slightlyabove the plane of the said seat member.

2. A trash burner consisting of an upright tube having spaced holes inthe lower marginal portion of its walls, and an internal ledge ringsecured to said walls at a plane above the plane of said holes, a ridgedgrate removably seated upon said ledge ring, a frusto-conical cover thediameter thereof at its lower base being greater than the tube and thetop thereof being perforated, an in ternal seat ring secured to saidbase and being of diameter to rest upon the rim of said tube, and aforaminous plate secured interiorly of said cover and inclined upwardlyfrom a point in the wall thereof spaced slightly above the plane of saidinternal ring.

References Cited in the file of this patent UNITED STATES PATENTS108,958 Beach Nov. 8, 1870 678,863 Cox July 23, 1901 1,065,445 HarrisJune 24, 1913 1,279,033 Stollberg Sept. 17, 1918 1,487,651 Fuller Mar.18, 1924 1,607,309 Romig Nov. 16, 1926 1,955,641 Lane Apr. 17, 1934

